CA2545926A1 - Implant for an intracorporal telemetric measurement - Google Patents
Implant for an intracorporal telemetric measurement Download PDFInfo
- Publication number
- CA2545926A1 CA2545926A1 CA002545926A CA2545926A CA2545926A1 CA 2545926 A1 CA2545926 A1 CA 2545926A1 CA 002545926 A CA002545926 A CA 002545926A CA 2545926 A CA2545926 A CA 2545926A CA 2545926 A1 CA2545926 A1 CA 2545926A1
- Authority
- CA
- Canada
- Prior art keywords
- carrier
- implant according
- coil
- sensor device
- connection lines
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/03—Detecting, measuring or recording fluid pressure within the body other than blood pressure, e.g. cerebral pressure; Measuring pressure in body tissues or organs
- A61B5/031—Intracranial pressure
Abstract
The invention relates to an implant which is used to carry out intracorporal, telemetric measurements. Said implant comprises a sensor device (1) and an inductive coil (2) which is connected to the sensor device (1) by means of electric connection lines (4) arranged on a longitudinal carrier (3), also comprising a covering (5) which encapsulates the sensor device (1), the carrier (3) which is provided with the connection lines (4), and the coil (2).
The carrier (3) for the electric connection lines (4) has a strength which is measured in such a manner that the sensor device (1), which is firmly connected to a carrier end, is guided to the destination during implantation by the carrier (3) and is maintained in position at the destination, and the covering part (6) encapsulating the coil (2) is configured for subcutaneous fixing.
The carrier (3) for the electric connection lines (4) has a strength which is measured in such a manner that the sensor device (1), which is firmly connected to a carrier end, is guided to the destination during implantation by the carrier (3) and is maintained in position at the destination, and the covering part (6) encapsulating the coil (2) is configured for subcutaneous fixing.
Description
Implant for an intracorporal telemetric measurement The invention relates to an implant for an intracorporal telemetric measurement according to the preamble of patent claim 1.
In such an implant, known from US 6,083,174, a sensor device with an inductive to coil is electrically connected via an electric line being arranged on a longitudinal carrier. The sensor device and the carrier with the connection lines and the coil are encapsulated in a covering. The sensor device as well as the coil and the electrical connection conductors are arranged on a flexible foil. By means of the inductive coupling of the coil as well the energy supply of the sensor device as the telemet-ric transmission of the data measured by the sensor device is achieved. With the known implant, intracranial pressure measurements can be carried out.
It is the subject of the invention to create an implant of the above-mentioned type the implantation of which especially in corporeal interiors, such as interiors of the 2o brain, is facilitated.
This object is achieved according to the invention by the characterizing features of patent claim 1.
According to the invention, the carrier comprises for the electrical connection lines such a stiffness and rigidity that the sensor device which is fixedly bonded to one carrier end is guided by means of the carrier during implantation to the target position and is positioned, especially held in position, at the target position.
Therefore, the covering part which encapsulates the inductive coil is provided for 3o a subcutaneous mounting, especially an epidural fixation.
In such an implant, known from US 6,083,174, a sensor device with an inductive to coil is electrically connected via an electric line being arranged on a longitudinal carrier. The sensor device and the carrier with the connection lines and the coil are encapsulated in a covering. The sensor device as well as the coil and the electrical connection conductors are arranged on a flexible foil. By means of the inductive coupling of the coil as well the energy supply of the sensor device as the telemet-ric transmission of the data measured by the sensor device is achieved. With the known implant, intracranial pressure measurements can be carried out.
It is the subject of the invention to create an implant of the above-mentioned type the implantation of which especially in corporeal interiors, such as interiors of the 2o brain, is facilitated.
This object is achieved according to the invention by the characterizing features of patent claim 1.
According to the invention, the carrier comprises for the electrical connection lines such a stiffness and rigidity that the sensor device which is fixedly bonded to one carrier end is guided by means of the carrier during implantation to the target position and is positioned, especially held in position, at the target position.
Therefore, the covering part which encapsulates the inductive coil is provided for 3o a subcutaneous mounting, especially an epidural fixation.
With the implanted sensor device, which is connected rigidly with the covering part which encapsulates the inductive coil via the relatively stiff carrier, intracra-nial, e.g. intraparenchymal or intraventricular pressure measurements can be car-ried out.
s For an appropriate subcutaneous, especially epidural arrangement of the inductive coil, the coil with its plane may, after the positioning of the sensor device at the target position, be bended relative to the carrier at an angle <180°, especially from 60° to 120°. Between the sensor device and the coil, there are preferably two elec-to trical connection lines arranged at the carrier, especially for a digital data trans-mission. The same serve for energy supply of the sensor device and for the trans-mission of the measurement data being processed for the telemetry.
The carrier may for example be formed as thin polyimide foil which for stiffening 1s may comprise a cambered form. The carrier may also be rod-shaped with an rec-tangular cross-section or a circle segment cross-section.
It is also possible to provide a stiffening foil in the covering with which the carrier and the connection lines being arranged thereon are encapsulated.
However, a flat form of the carrier and of the covering which encapsulates the latter is preferred.
The sensor device includes at least one sensor, by means of which physical quan-2s tities may be measured at the target position. Preferably, the sensor device com-prises at least one pressure sensor and is possibly an additional temperature sen-sor. The telemetry electronics can be arranged within the sensor device, for proc-essing the measuring signals of the sensor for a telemetric transmission through the inductive coil. The at least one pressure sensor and the telemetry electronics 3o may be arranged in a measurement chip. The covering consists of a bio-compatible material, such as silicon. In the range of the one or more pressure sen-sors, the covering may be formed in such a way that the same forwards the pres-sure to be measured to at least one pressure sensor. For example, at least in the range of the pressure sensor a flexible covering may be applied in which a pres-sure transmitting medium, preferably a gel, an oil based on silicon or the like is arranged.
By means of the figures, the invention is explained in more detail by means of exemplary embodiments.
to It shows:
Fig. 1 an exemplary embodiment of the invention with a covering being open in upward direction;
Fig. 2 a second exemplary embodiment of the invention with an open covering;
and Fig. 3 an exploded view of the exemplary embodiments of figs. l and 2 in the range of the sensor device.
The exemplary embodiments of an implant for an intracorporal telemetric meas-urement illustrated in the figures include a sensor device 1 and an inductive coil 2, which are connected to one another via electrical connection lines 4. In the illus-trated exemplary embodiments, there are provided two electrical connection lines 4. The electrical connection lines are preferably applied as metallizations of noble metal, especially gold, on a longitudinal carrier 3. The longitudinal carrier 3 may be formed as a foil of an appropriate plastic, for example polyimide or also as a longitudinal rod. As shown in the figures, the carrier is preferably formed as flat carrier with an rectangular cross-section.
The carrier 3 possesses a set stiffness which is dimensioned in such a way that the sensor device 1 being rigidly bonded to one carrier end is guided during implanta-tion to the target position by means of the carrier 3 and is held in position at the target position. The carrier 3 therefore is formed sufficiently stiff, yet still flexible enough that the implantation may be carried out without irritation of the surround-ing corporal tissue. At the other end, the carrier 3 is rigidly bonded to the covering part 6 which encapsulates the coil 2. The covering part 6 is provided for a subcu-taneous mounting and e.g. at an intracranial pressure measurement for an epidural arrangement and fixation.
For a rigid connection of the sensor device 3 with the carrier end, there is pro-vided at the carrier 3 a frame 10 being rigidly connected with the carrier end 3.
This frame 10 may be formed in one piece of the carrier material 3. In the assem-bled condition, the sensor device 1 is placed within the rectangular opening of the frame.
The individual parts of the implant are encapsulated by a bio-compatible covering 5, for example of silicon. This covering 5, which especially in the range of the sensor device may be formed as a gel or oil including flexible foil comprising the covering part 6 encapsulating the coil 2 and a covering part 9, encapsulating the carrier and the connection lines 4 being arranged thereon and a covering part encapsulating the sensor device 1.
The covering part 7 is formed in such a way that it is permeable for the physical quantity to be measured at the target position. Preferably it acts as a pressure transmitting medium for a pressure measurement, for example silicon or a foil covered gel.
In the exemplary embodiment shown in fig. l, the sensor device 1 and the coil windings 8 of the inductive coil 2 are located in a common plane. The coil wind-ings may be formed as electrical tracks, metallizations, thin wires and the like. In _5-the exemplary embodiment illustrated in fig. 2, the carrier 3 with the connection lines 4 being arranged thereon and the sensor device 1 extend in an angle of ap-proximately 90° relative to the plane in which the coil windings 8 are arranged.
This angled arrangement is generated after the implantation of the sensor device 1 and the carrier 3 by bending the coil assembly. Depending on the location of the target position and the position in which the inductive coil 2 is arranged subcuta-neously, the angle between the carrier 3 and the plane of the coil windings 8 will be dimensioned <180°, especially to a dimension in the range from 60° to 120°.
1 o For a facilitated implantation, the covering part 6 and the coil assembly in the covering part 6 are formed sufficiently flexible for a folding or for rolling.
For a subcutaneous fixation, the covering part 6 may comprise fixing elements 11, by which for example by sewing a fixation of the coil and thus of the implant is achieved.
List of reference numbers:
1 sensor device 2 inductive coil 3 carrier for electrical connection lines 4 electrical connection lines 5 covering (encapsulation) 6 covering part for the coil 7 covering part for the sensor device 8 coil windings 9 covering part for the carrier 10 frame 11 fixing elements
s For an appropriate subcutaneous, especially epidural arrangement of the inductive coil, the coil with its plane may, after the positioning of the sensor device at the target position, be bended relative to the carrier at an angle <180°, especially from 60° to 120°. Between the sensor device and the coil, there are preferably two elec-to trical connection lines arranged at the carrier, especially for a digital data trans-mission. The same serve for energy supply of the sensor device and for the trans-mission of the measurement data being processed for the telemetry.
The carrier may for example be formed as thin polyimide foil which for stiffening 1s may comprise a cambered form. The carrier may also be rod-shaped with an rec-tangular cross-section or a circle segment cross-section.
It is also possible to provide a stiffening foil in the covering with which the carrier and the connection lines being arranged thereon are encapsulated.
However, a flat form of the carrier and of the covering which encapsulates the latter is preferred.
The sensor device includes at least one sensor, by means of which physical quan-2s tities may be measured at the target position. Preferably, the sensor device com-prises at least one pressure sensor and is possibly an additional temperature sen-sor. The telemetry electronics can be arranged within the sensor device, for proc-essing the measuring signals of the sensor for a telemetric transmission through the inductive coil. The at least one pressure sensor and the telemetry electronics 3o may be arranged in a measurement chip. The covering consists of a bio-compatible material, such as silicon. In the range of the one or more pressure sen-sors, the covering may be formed in such a way that the same forwards the pres-sure to be measured to at least one pressure sensor. For example, at least in the range of the pressure sensor a flexible covering may be applied in which a pres-sure transmitting medium, preferably a gel, an oil based on silicon or the like is arranged.
By means of the figures, the invention is explained in more detail by means of exemplary embodiments.
to It shows:
Fig. 1 an exemplary embodiment of the invention with a covering being open in upward direction;
Fig. 2 a second exemplary embodiment of the invention with an open covering;
and Fig. 3 an exploded view of the exemplary embodiments of figs. l and 2 in the range of the sensor device.
The exemplary embodiments of an implant for an intracorporal telemetric meas-urement illustrated in the figures include a sensor device 1 and an inductive coil 2, which are connected to one another via electrical connection lines 4. In the illus-trated exemplary embodiments, there are provided two electrical connection lines 4. The electrical connection lines are preferably applied as metallizations of noble metal, especially gold, on a longitudinal carrier 3. The longitudinal carrier 3 may be formed as a foil of an appropriate plastic, for example polyimide or also as a longitudinal rod. As shown in the figures, the carrier is preferably formed as flat carrier with an rectangular cross-section.
The carrier 3 possesses a set stiffness which is dimensioned in such a way that the sensor device 1 being rigidly bonded to one carrier end is guided during implanta-tion to the target position by means of the carrier 3 and is held in position at the target position. The carrier 3 therefore is formed sufficiently stiff, yet still flexible enough that the implantation may be carried out without irritation of the surround-ing corporal tissue. At the other end, the carrier 3 is rigidly bonded to the covering part 6 which encapsulates the coil 2. The covering part 6 is provided for a subcu-taneous mounting and e.g. at an intracranial pressure measurement for an epidural arrangement and fixation.
For a rigid connection of the sensor device 3 with the carrier end, there is pro-vided at the carrier 3 a frame 10 being rigidly connected with the carrier end 3.
This frame 10 may be formed in one piece of the carrier material 3. In the assem-bled condition, the sensor device 1 is placed within the rectangular opening of the frame.
The individual parts of the implant are encapsulated by a bio-compatible covering 5, for example of silicon. This covering 5, which especially in the range of the sensor device may be formed as a gel or oil including flexible foil comprising the covering part 6 encapsulating the coil 2 and a covering part 9, encapsulating the carrier and the connection lines 4 being arranged thereon and a covering part encapsulating the sensor device 1.
The covering part 7 is formed in such a way that it is permeable for the physical quantity to be measured at the target position. Preferably it acts as a pressure transmitting medium for a pressure measurement, for example silicon or a foil covered gel.
In the exemplary embodiment shown in fig. l, the sensor device 1 and the coil windings 8 of the inductive coil 2 are located in a common plane. The coil wind-ings may be formed as electrical tracks, metallizations, thin wires and the like. In _5-the exemplary embodiment illustrated in fig. 2, the carrier 3 with the connection lines 4 being arranged thereon and the sensor device 1 extend in an angle of ap-proximately 90° relative to the plane in which the coil windings 8 are arranged.
This angled arrangement is generated after the implantation of the sensor device 1 and the carrier 3 by bending the coil assembly. Depending on the location of the target position and the position in which the inductive coil 2 is arranged subcuta-neously, the angle between the carrier 3 and the plane of the coil windings 8 will be dimensioned <180°, especially to a dimension in the range from 60° to 120°.
1 o For a facilitated implantation, the covering part 6 and the coil assembly in the covering part 6 are formed sufficiently flexible for a folding or for rolling.
For a subcutaneous fixation, the covering part 6 may comprise fixing elements 11, by which for example by sewing a fixation of the coil and thus of the implant is achieved.
List of reference numbers:
1 sensor device 2 inductive coil 3 carrier for electrical connection lines 4 electrical connection lines 5 covering (encapsulation) 6 covering part for the coil 7 covering part for the sensor device 8 coil windings 9 covering part for the carrier 10 frame 11 fixing elements
Claims (14)
1. Implant for an intracorporal, telemetric measurement with a sensor device and an inductive coil, which is connected to the sensor device via electrical connection lines being arranged on a longitudinal carrier, and a covering, by means of which the sensor device, the carrier with the connection lines and the coil are encapsulated;
characterized in that the carrier (3) for the electrical connection lines (4) comprises such a rigid-ity that the sensor device (1) which is fixedly bonded to one carrier end, is guided by means of the carrier during implantation to the target position and held in position at the target position, and that the covering part (6) encapsulating the coil (2) is provided for a subcutaneous fastening.
characterized in that the carrier (3) for the electrical connection lines (4) comprises such a rigid-ity that the sensor device (1) which is fixedly bonded to one carrier end, is guided by means of the carrier during implantation to the target position and held in position at the target position, and that the covering part (6) encapsulating the coil (2) is provided for a subcutaneous fastening.
2. Implant according to claim 1, characterized in that the carrier (3) is arranged in an angle <180°, especially from 60° to 120°
relative to the plane, in which the coil windings (8) of the inductive coil (2) are arranged.
relative to the plane, in which the coil windings (8) of the inductive coil (2) are arranged.
3. Implant according to claim 1 or 2, characterized in that at the carrier (3) there are provided two connection lines (4) between the coil (2) and the sensor device (1).
4. Implant according to one of the claims 1 to 3, characterized in that the carrier (3) is formed in a flat manner.
5. Implant according to one of the claims 1 to 4, characterized in that in the covering part (9) with which the carrier (3) and the electrical con-nection lines (4) being arranged on the carrier (3) are encapsulated there is provided a stiffening foil or an armoring.
6. Implant according to one of the claims 1 to 5, characterized in that the carrier (3) is formed as a rod or a foil.
7. Implant according to one of the claims 1 to 6, characterized in that the carrier (3) is formed as a stiffened foil, especially by camber or as car-rier with a rectangular or circle-segment-like cross-section.
8. Implant according to one of the claims 1 to 7, characterized in that at the end of the carrier (3) there is fastened a frame (10) in which the sen-sor device (1) is arranged positively fitting.
9. Implant according to claim 8, characterized in that frame (10) is formed one piece with the carrier (3).
10. Implant according to one of the claims 1 to 9, characterized in that the carrier (3) is formed as a common carrier for the electrical connection lines (4) and the coil windings (8).
11. Implant according to one of the claims 1 to 10, characterized in that sensor device (1) comprises at least one pressure sensor.
12. Implant according to one of the claims 1 to 11, characterized in that the covering part (6) encapsulating the coil (2) is provided for a subcuta-neous, especially epidural, positioning of the coil, wherein the sensor de-vice has to be arranged in an interior of the brain.
13. Implant according to claim 11 or 12, characterized in that the encapsulating material of the covering part (7) covering the sensor de-vice (1) is formed as a pressure transmitting medium, especially of silicon.
14. Implant according to one of the claims 1 to 13, characterized by its formation as intracranial measurement device, wherein the sensor de-vice (1) is to be positioned for an intraparenchymal or intraventricular pressure measurement.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10353143.2 | 2003-11-14 | ||
| DE10353143A DE10353143A1 (en) | 2003-11-14 | 2003-11-14 | Implant for intracorporeal, telemetric measurement |
| PCT/EP2004/012671 WO2005048836A1 (en) | 2003-11-14 | 2004-11-09 | Implant for intracorporal, telemetric measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2545926A1 true CA2545926A1 (en) | 2005-06-02 |
Family
ID=34608981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002545926A Abandoned CA2545926A1 (en) | 2003-11-14 | 2004-11-09 | Implant for an intracorporal telemetric measurement |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20070273392A1 (en) |
| EP (1) | EP1681994A1 (en) |
| AU (1) | AU2004290519B2 (en) |
| CA (1) | CA2545926A1 (en) |
| DE (1) | DE10353143A1 (en) |
| WO (1) | WO2005048836A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101513698B1 (en) * | 2010-07-28 | 2015-04-20 | 삼성전자 주식회사 | Temperature sensor and induction heating cooker having the same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4660568A (en) * | 1976-06-21 | 1987-04-28 | Cosman Eric R | Telemetric differential pressure sensing system and method therefore |
| US4519401A (en) * | 1983-09-20 | 1985-05-28 | Case Western Reserve University | Pressure telemetry implant |
| US5207103A (en) * | 1987-06-01 | 1993-05-04 | Wise Kensall D | Ultraminiature single-crystal sensor with movable member |
| DE19638813C1 (en) * | 1996-09-20 | 1998-03-05 | Sican F & E Gmbh Sibet | Measuring device for medical applications with an intracorporeally usable sensor element and method for its production |
| US6083174A (en) * | 1997-02-13 | 2000-07-04 | Sican Gmbh | Implantable measuring unit for intracorporal measurement of patient data |
| US6193656B1 (en) * | 1999-02-08 | 2001-02-27 | Robert E. Jeffries | Intraocular pressure monitoring/measuring apparatus and method |
| US6579235B1 (en) * | 1999-11-01 | 2003-06-17 | The Johns Hopkins University | Method for monitoring intraocular pressure using a passive intraocular pressure sensor and patient worn monitoring recorder |
-
2003
- 2003-11-14 DE DE10353143A patent/DE10353143A1/en not_active Withdrawn
-
2004
- 2004-11-09 EP EP04797745A patent/EP1681994A1/en not_active Withdrawn
- 2004-11-09 US US10/579,265 patent/US20070273392A1/en not_active Abandoned
- 2004-11-09 AU AU2004290519A patent/AU2004290519B2/en not_active Ceased
- 2004-11-09 WO PCT/EP2004/012671 patent/WO2005048836A1/en active Application Filing
- 2004-11-09 CA CA002545926A patent/CA2545926A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005048836A8 (en) | 2005-09-15 |
| AU2004290519A1 (en) | 2005-06-02 |
| US20070273392A1 (en) | 2007-11-29 |
| DE10353143A1 (en) | 2005-07-21 |
| AU2004290519B2 (en) | 2010-05-13 |
| WO2005048836A1 (en) | 2005-06-02 |
| EP1681994A1 (en) | 2006-07-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |
Effective date: 20151110 |